Twenty-five homes in west Auckland will remain isolated overnight on Monday after heavy rain flooded Tram Valley Road in Swanson.
About 200 metres of the road has been flooded by a temporary lake which has formed as a result of rain.
Waitakere City Council says contractors have been pumping water out and ferrying residents through the water on the back of a truck.
The council says the flooding has been caused by a blocked culvert.
The road will not reopen until Tuesday.